Needle-setter.



F. A. CHAPIN.

NEEDLE SETTER.

APPLICATION FILED SEPT. 4. 1914.

Patenwd Feh29, 1916.

i wa gme @JUH-n ems co to the invention in connection platform 2immune-serene.

Specification of Letters Itatent.

pplicetion filed September d, 192 Serial No. 860,127.

To all whom it may concern:

Be it known that l, FREDERICK A. Crmrrlv, a citizen of the UnitedStatesof America. esiding at Toledo, @hio, have invented new usefulNeedle-Setters, of which the folowing is a specification.

This invention relates to means for positioning a member for coactionwith another member for subsequent relative travel therebetween.

This invention has utility when incorporated in connection with"reproducing mechanisms, especially sound reproducers of the dish recordtype.

Referring to the drawings: Figure 1 isa perspective view of anembodiment of the with a disk record sound reproducer; Fig. 2 is alongitudinal section, on an enlarged scale, of features of the device ofthe invention; and Fig. 3is a side elevation of the device, adjusted foruse in connection with a different diameter record than the showing inFig. 1, with a fragment of the machine shown.

The sound reproducing machine may embody the main frame 1 having mountedthereon the rotatable platform 2 for. supporting: the (113i; record 3having ad acent the outer periphery a non-reproducing portion t, andsurrounded by this non-reproducing; pc tion 4 a'reproducing portion 5.

Cerriedhy the frame 1 is the bracket 6 upon which is mounted the arm?pivoted to swing across the face of the record 3. ice free end of thearm 7 carriesthe sound box 8 in which is mounted the needle 9 disposedto rest upon or contact the record 3 for sound reproduction by 'relativetravel in the grooves or sound reproducing PQP tion of the record 8. iThe device of the invention is disposed for limiting the swing of thearm 7 in bringing the needle 9 into starting position. This swing of thearm 7 is with the sound box 8 so turned that the needle is free of therecord 3. s Vhen the swing of the arm 7 is in the region of theperiphery of the record 8, the needle is swung downward into recordcontacting position. after the record is under speed. This setting ofthe needle should be accurately. done in the outermost groove in a1 easymanner to avoid in ury core. t d on the frame 1 adjacent the is thesupport for up it having the transversely perforate ,wardly spun lip 16behind the rib ii" head 11 provided with a se' screw 12 justable toengage the tube 13 hat therein the compression spring ilretain' by thehead held thereon by the in on the end of the tube. 13. The collar 18 lmits the inward travel of the head 15 by the lip 16 coacting therewith.The compress on of the spring Lland therefore, its tive strength may.beadjustedby the screw 19in the tube 13, while the plug 20 may beinserted in the open end of the tube 13 to cause it to present a moresightly appearance.

in positioning the upright 10, the arm 7 maybe swung to such positionthat the needle 9 when dropped to position will fall just inside theperiphery of the smaller, if there he variation in diameter. of ormaximum size, records for which the platform T2 is designed. The uprightis then placed so that the collar 21 on the tube 13 abuts the head 11,and the set screw 12, is rotated to loch the member 13 in this position,with the head 15 compressing" spring 14 and contacting or coacting withsome movable part of the pivoted or swinging members. as the arm i'.

To operate the device, the machine is started in the usual way, and thenthe arm swung over to abut the buffer head 15 and compress the spring1%. The needle 9 is then permit-ted to contact the record per tion t,and the yieldable member 15 at once gently comes into action to shiftthe needle 9 across the non-reproducing portion 4: of the record member3 into the outermost reproducing groove, so that reproduction begins atonce.- The great advantage of the device is that the setting may beaccomplished quickly with any change of records of the taken generalsize and without the least study or eye strain for locating the point orscratching the record by manually forcing the needle thereon. It will hethus -se en,' wi hout any illumination whatever,

the needle may i be set for reproduction. With nicety in springadjustment, the shifting' of the buffer head 15 may just overcome theresistance of the arm 7 which is very slight during the rotation of therecord, and

the full the needle resting thereon. The length of the section 22between the ribs 17, It; may be in excess of the maximum variation ofthenon-reproducmg portions 4, or approximating such variation, and theactual shift ing may be such that inthe quiet travel of the-needle 9 tothe outermost groove, the impetus given is just suflicient to free thearm 7 from the head 15 as the outermost groove is entered by the needle.This adjustment with the light weight spring 14 is readily possible.

In instances Where a smaller standard record is used, say from a 12 to a10 size, the smallerrecord 23 (Fig. 3) is spaced inward more from theupright 10, but as the same general range of conditions are to be foundhere, there need not be re-adjustment of the spring ll, nor a resettingof the upright 10. The set screw 12 may be loosened and the tube 13thrust inward to bring the needle 9 within the periphery of the smallestof the standard 10 records, and then a collar 24 rotated up to positionto abut the head 11, Where it may be locked by a set screw 25, whilethe'tube 13 is held there by the set screw 12.

With the positioning of the standard 10 bringing the collar 9.1 intoplay there is a ready adjustment for determining limiting position forlocking the tube 13 by the set screw 12 for one range of records. EvenWhile the operator is getting the disk under speed for swinging theneedle down into position, shifting of the adjustment by loosening theset screw 12, may occur to bring the collar 21 or the collar 2st intocontacting position with the head 11, to provide for the automaticneedle setting or shifting as the general standard size of the disk mayrequire. The handling is not difficult, and the device is simple,reliable and ornamental, as well as of material assistance in the propermachine operation.

What is claimed and it is desired to secure by Letters Patent is:

1. A setting device for sound reproducers including a relatively fixedelement, member slidably mounted therein, a head mounted on and forindependent sliding movement relatively to the member, and a springarrarged Within the member and resisting sliding movement of the head.

2. A setting device for sound reprodncers .including a fixed upr1ght, atube slidably mounted in the upright, a head slidably mounted on thetube, a'spring arranged Within the tube and resisting sliding movementof the head in one direction, and means carried by the tube to limit itssliding adjustment in the upright. I

3. A setting device for sound reproducers including a fixed upright, atube slidably mounted in the upright, a head slidably mounted on thetube, a spring arranged Within the tube and resisting sliding movementof the head in one direction, a fixed stop carried by the tube to limitmovement of the tube in the upright in one direction, and a second stopadjustably carried by the tube to limit movement of the tube in theupright in the opposite direction.

In testimony whereof I atliX my signature in the presence of tWoWitnesses.

FREDERICK A. GHAPIN.

lVitnesses Gno. E. KIRK, GLADYS Jameson.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 01 Eatents, Washington, D. C.

